A serial killer undergoes a midlife crisis as his fortieth birthday approaches, finding himself dissatisfied with his killings, and meets a young videographer who lures him into an uneasy partnership. He wants her to record a documentary on his life, but their collaboration takes a dark turn when she discovers the true nature of her host. As the day unfolds, Sara must confront her own mortality and Aaron's twisted desires, leading to a shocking conclusion that will leave you breathless.